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6
votes
2answers
1k views

How to make password-less login work

I generated a key and copied it to my target: ssh-keygen ssh-copy-id username@hostname I left the the location of the key as default and did not set any passphrase. For a small while after that, I ...
108
votes
19answers
143k views

Why am I still getting a password prompt with ssh with public key authentication?

I'm working from the URL I found here: http://jaybyjayfresh.com/2009/02/04/logging-in-without-a-password-certificates-ssh/ My ssh client is Ubuntu 64 bit 11.10 desktop and my server is Centos 6.2 64 ...
25
votes
3answers
85k views

ssh_exchange_identification: Connection closed by remote host (not using hosts.deny)

I'm not using hosts.allow or hosts.deny, further more SSH works from my windows-machine (same laptop, different hard drive) but not my Linux machine. ssh -vvv root@host -p port gives: OpenSSH_6.6, ...
5
votes
1answer
335 views

Automated ssh login with passphrase?

Logging onto a machine over ssh typically requires a password to be entered before access is granted. Alternatively, a key/certificate (without a passphrase) can be installed onto the remote machine ...
7
votes
1answer
1k views

Given a private SSH key, how do I recover my public key?

I've somehow lost my id_rsa.pub file. I still have my id_rsa file. How do I recover the public key from the private key? (This question came up after ssh-copy-id was reporting "ERROR: No identities ...
0
votes
3answers
150 views

creating and sending a self-signed public key using GnuPG in CentOS 7

I know that I can create a GPG keypair from the CentOS 7 terminal by typing gpg --gen-key and following the resulting steps, but how can I make sure that the resulting public key is self-signed? And ...
12
votes
2answers
34k views

SSH key-based authentication: known_hosts vs authorized_keys

I read about setting up ssh keys in Linux and have some questions. Correct me if I'm wrong… Let's say host tr-lgto wants to connect to host tr-mdm using ssh. If we want to be sure that it's the real ...
12
votes
3answers
13k views

SCP from one server to another without password prompt

What is the best way of doing SCP from one box to the other without prompting for password? There are two servers: Server A (10.152.2.10): /home/oracle/export/files.txt Server B (10.152.2.11): ...
5
votes
2answers
2k views

Restrict password-less backup with SFTP

I need to perform backup of a server to my computer using Duplicity: duplicity /etc sftp://backup@my.dynamic.ip.address//home/backup Before this can be done, I need to allow password-less access by ...
2
votes
3answers
472 views

Authentication refused: bad ownership or modes for file /var/git/.ssh/authorized_keys [duplicate]

EDIT The issue as exposed here is solved (about files modes of the .ssh folder. But an other issue persists so I create a new question : > Unable to login with SSH-RSA key I can no longer ...
2
votes
2answers
1k views

Why can't I use public/private key authentication with ssh on Arch Linux?

I have the following setup on an Ubuntu machine: ~/dotfiles/authorized_keys2 ~/.ssh/authorized_keys2 -> /home/wayne/dotfiles/authorized_keys2 I had the same setup on my Arch machine, but when I ...
3
votes
1answer
724 views

ssh prompts for password despite .ssh/authorized_keys

I issued ssh username@db2workgoup -n "echocat ~/.ssh/id_dsa.pub>> ~/.ssh/authorized_keys" and then checked that the key was stored in authorized_keys file. But ssh is still asking for the ...
2
votes
1answer
409 views

Why do NoMachine NXclient docs instruct to copy over the server's private key?

Working to set up the GnuPG keymanager for SSH and now FreeNX server on CentOS 6 and NoMachine NXclient on my new install of ArchLinux I've been reading more about keys than I've ever read before. I'm ...
0
votes
1answer
53 views

Unable to login with SSH-RSA key

This post is following this question : Authentication refused: bad ownership or modes for file /var/git/.ssh/authorized_keys . The issue as exposed there is solved (about files modes of the ...